The wedding countdown is on, and Reese Witherspoon is getting every last workout in before it is time to slip into her designer wedding gown and say her ‘I Do’s.’ The beautiful blonde actress hit the streets with her personal trainer on Thursday, working up a sweat during a pre-wedding workout.

Refusing to take off the 4-carat Ashoka William Goldberg engagement ring, which mega-agent Jim Toth presented to her back in December, Reese was dressed to sweat in a St. Paddy’s Day hued t-shirt, gym shorts, sneaks and a Stanford University hat.

The Water For Elephants star recently hit the Ona Spa in Los Angeles, where spa representatives told RadarOnline.com that she had a stone massage and purchased several products including their Ona Spa Pumpkin Scrub and Ona Body Polish.